
Salt Air & Coastal Humidity
Built for the Coast
Fiberglass expands at the same rate as glass, maintaining a permanent seal in marine environments.
U-0.17 Best-in-Class U-Factor · R-5.5 Frame Insulation · 50yr Warranty
Collections
Architectural
Apertures
Material Science
Why
Choose Fiberglass
Pultruded fiberglass is engineered material created through a process where strands of glass and glass matting are pulled through heated dies. The result: lineals customized to specific window component requirements with exceptional durability and performance. Preferred for durability, versatility, and superior engineering.
Key Considerations
Fiberglass is incredibly strong and resistant to warping, rotting, and swelling, making it ideal for withstanding harsh weather conditions and ensuring longevity.

Material Comparison
| Property | Fiberglass |
|---|---|
| Tensile Strength | 60,000 psi |
| Thermal Expansion | Matches glass |
| Frame R-Value | R-5.3 |
| Expected Lifespan | 50+ years |
| Maintenance | None required |
| Dimensional Stability | Exceptional |
Performance Matrix
Engineered for
Every Climate
U-Factor
BTU/h·ft²·°F
SHGC
Solar Heat Gain
VT
Visible Transmittance
STC
Sound Transmission
Begin Your Project
Your Vision,
Our Precision
Every Luminera window is crafted to your exact specifications. Share your project details and receive a custom architectural specification within 48 hours.











